What is an umbilical hernia? An umbilical hernia is a bulge through the abdominal muscles in the area of the navel (belly button). The hernia may contain tissue from the abdomen, part of an organ (such as the intestine), or fluid.
Iliac crest contusion occurs due to bleeding of abdominal muscles and swelling. This can cause excruciating pain when the person tries to move his hip region. Bleeding can occur on the periosteum region of the bone resulting in inflammation and the muscles of the iliac crest would develop spasms.
Top 10 Doctor insights on: Left Posterior Iliac Crest Pain. 1 Left posterior iliac crest sharp pain? Sacroiliac pain: This is most likely a pain coming out of your sacroiliac joint, the joint where the pelvic bone meets the tail bone.